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J. ONEIL.

- PUMP.

No. 602,869. Patented Apr: 26, 1898.

OO .me ma l//////////////////////////////////7 w 7. 8 mf d na M avertical section, on an enlarged scale, of the rUNITED STATES PATENTrrrcn.

JOSEPH ONEIL, OF TAYLORSTOWN, PENNSYLVANIA.

PUMP.l

SPECIFICATION forming part of Letters Patent N o. 602,869, dated April28, 1898.

Application filed February 17, 1897. Serial No. 623,793. (No model.)

To L7/Z whom it may concern:

Be it known that I, Josnrn ONEIL, acitizen of the United States,residing at Taylorsrown, in the county of Washington and State ofPennsylvania, have invented or discovered new and useful Improvements inPumps, of which the following is a specification.

In the accompanying drawings,which make part of this specification,Figure 1 is a broken vertical section showing that portion of myapparatus which adapts the pump to use with a wire line. Fig. 2 is alike view of the pumping apparatus proper. Fig. 3 is a like brokenlocking apparatus, showing the springs compressed. Fig. Il is a planview of the same. Fig. 5 is a section on line 5 5 of Fig. 3. Fig. 6 is aside elevation of the interior apparatus of the fluid-distributor. Fig.7 is a vertical section of Fig. 6. Fig. 8 is a vertical section of theshell of the iiuid-distributer.

The purpose of my invention, generally sta-ted, is to devise a pumpingapparatus having two pistons of equal diameter and so arranged andcombined with accessory mechanism that a wire line may be used inpumping in place of the ordinary sucker-rods. To accomplish thispurpose, I so arrange my mechanism that the fluid will automaticallymake a downdraft on the wire line and so keep the same taut on thedownward stroke of the pump. My mechanism may be used with the ordinarysucker-rods, but it is not primarily intended for such use. Theapparatus is peculiarly adapted for use in oil-wells, but can be used inwater and other wells.

In the several drawings, which make part of this specification, 2 is thetubing of an oilwell.

3 is the lower or standing valve of the ordinary working barrel 4.

5 is the pumppiston proper, having the usual cups.

6 is the working or upper valve.

7 is the valve-rod.

The tubing at its upper end is screwed to a coupling S,which in turn isscrewed to the lower end of the shell 9 of a huid-distributor." Theupper end of the fluid-distributer is likewise screwed to anothersection of the tubing. The construction of the luid-distributer isclearly seen in Fig. S. It has a longitudinal passage extending alongits left side marked 82. On the side of the duid-distributor is aspring-seated valve 8b, held open by the pressure of the iluid, ashereinafter described. The valve-passage SC communicates with theinterior of the i'luid-distributer.

I will now describe the mechanism built up in the interior of theluiddistributer. This mechanism is preferably made of a number of piecesfor convenience in manufacturing and assembling. At the lower end of thedistributer is the piece 9', having lateral openings 9'9". This piece isthreaded atits lower end into a sleeve 10,which in turn is threaded atits lower end into the upper end of the Working barrel 1. The jointbetween the upper end of sleeve 10 and coupling 8 is packed at l1. Thevalve-rod 7 passes through the piece 10. Screw-threaded to and supportedby the piece l0 is stufling-box 12, packed at 12 and which acts asasupport for the stem 13 of vertical spring-seated valve 1392 Saidvertical valve 13a is substantially opposite valve Si. la is thevalve-seat for said valve 13a and has vertical openings 14a 14n. Saidvalve-seat 14 is threaded to the lower end of a supporting-piece14,which in turn is threaded to an auxiliary working barrel 15, in whichmoves draft-piston 16.

17 is suitable packing at the upper end of valve-seat 14. Valve-rod 7extends from piston 16 to subpiece 18, to which itis screwed, by whichconnection is made with jar 19, above which is attached the wire cable.

I will now describe the locking mechanism for holding in place thevarious devices contained in the iiuid-distributer and the auxiliaryworking barrel 15.

2O is a casting, shown as hexagonal and having lateral ports 2Osi onfour of its sides and having secured to the other two sides theleaf-springs 21 21. The casting 2O has a depending bottom iiange 20", bywhich it is threaded t0 the auxiliary working barrel 15, in which playsthe draft-piston 16.

22 is a short pipe-section passing loosely through the center of casting20 and screwed to cross-head 23, which has side slots 23a 23, throughwhich pass springs 21 2l. Subpiece 18 rests loosely upon top of pipe 22.

24: is a collar connecting two of the sections of tubing, said collarhaving an internal pe- IDO vious strokes of the pump descends with saiddraft-piston, and the oil standing in the tubing follows, iiowing downthrough lateral ports 20 20a, thus keeping the space above thedraft-piston charged with oil. It should be premised that when the pumpis first started it is primed by pouring in several buckets of oil, sothat there may be a.

sufficient weight upon the draft-piston-.16 to keep the wireline tautuntil the pump is fully working. After the pump is fully working itwilll be seen that the upper surface of' the draft-piston 16 has thefull pressure of the column of oil upon it, and this pressure willtendon the downstroke of the pump to return thepump-piston proper andthe draftpiston to their appropriate places and keep the-wire line taut.der side of the draft-piston 16 is practically nil, as the chamberimmediately below saidA piston is kept free from oil by valve 13%,

Should, however, any oil seep into saidchamber, itjwill be expelledonthe downward movement of the piston and the pressure on the upper sideof the draft-piston 16 be removed. This expulsion is accomplished by thefact that the valve 13 will yield against thepressure of the oil whichhas leaked in, andthe oil will pass through the openings 14ea 14 andout` into the well through the side valve 8".'

VVhenit is desirable to pull out the pump:

andthe mechanism connected'with and above the same, itl is accomplishedby pullingup, draft-piston. 16 until it strikes against the lower end ofpipe-section 22, ywhich is secu red The resistance on the un-` tocross-head 23. The upward movement being continued, cross-heady 23rises, compressing the bowed springs 21 21 until their upper ends slipinwardly past the flange 24, and the lock heretofore made between saidiiange and the upper ends of said springs is released.

The iiuid-pressureon the inside of the fluiddistributer now seats valveSi and prevents the escape of oil from the tubing, and thus avoidsrepriming the valve.

Various changes may be made in the form, larrangement, and proportion ofthe various parts, while still preserving the spirit of my invention,and suchy modifications I propose to cover in the annexed claims.

Having described my invention, I claim- 1. The combination of a workingbarrel; a piston working therein; an` auxiliary pumpbarrel; adraft-piston working therein; a valve-rod connecting said pistons andavalvevented chamber immediately below the draftpiston for the purpose ofrelieving the under side of said piston from pressure on the downwardmovement-ofV the pump.

2. In pumps the combination of a double piston; al lower piston and anintermediate luid-distributer provided with a passage to pass the fluidup the well and a valve-controlled discharge-passage to relieve thepressure beneath the upper piston.v

3. In. pumping devices, a lock, consisting of a base-piece springsattached to said basepieoe; a shoulder on the connecting-collar betweenthe well-tubing'and the pumping device, saidl shoulder engaging saidsprings when the pumping device is in position, and `a cross-head,through which said springs pass, lloosely mounted on the Valve-stem, andfitted, 5to be forcedup, and release said springs from lengagement withsaid shoulders.

' In .testimony whereofL I- have hereunto set fmy hand this 21st day ofJanuary, A. D; 1897. JOSEPH ON EIL.

Witnesses:

WM. L. PIERCE,

L. D. IAMs.

